Interaction Analysis Of Pile-soil-framed Shear Wall Under Horizontal Earthquake

With the rapid development and advancement of the construction industry,various forms of architectural structure have sprung up and the frame shear wallstructure with its relatively superior properties has attracted much attention;meanwhile earthquakes take place frenquently, bringing about human manydisasters. Therefore, interaction analysis of pile-soil-framed shear wall under theearthquake loads has become the focus of study for many scholars.With ABAQUS finite element software as the platform, this thesis adoptssoil column model and three-dimensional frame shear wall structure on the basisof Winkler model, and generally discusses the effect of the pile-soil interactionunder horizontal seismic loads on the result of the response to earthquake forframe shear wall structure. The study mianly includes the following parts:With the guide of p-y curve method, this thesis calculates the p-y curve ofspring that is used to simulate the pile-soil under horizontal loads according toNovak's k-p equation It corrects the p-y curve through the horizontaldisplacement decay rate of Rajashree, in order to fit the feature that the limitbearing capacity of the soil is reduced with the increase of the number ofhysteresis loop under seismic loads. What's more,It also make the corrected p-yexpression which have nonlinear spring properties in ABAQUS. At the same time,the thesis establishes the hysteresis loop curve with the Massing law, and toidentify the energy consumption of the corresponding soil layer through viscousdamping coefficient and energy dissipation coefficient.This thesis builds the following models: soil column model used to simulatethe mutual shearing acation between soil layers, simple three-dimensional frameshear computational model used to simulate the upper frame shear wall structure,the large model with smaller aspect ratio and even arrangement of shear wallused to supplement the calculation, Winkler viscoelastic element used tosimulate the energy dissipation of the soil layer.This thesis calculates the pile bottom earthquake motion and groundearthquake motion with PROSHAKE software first, then uses the powerful nonlinear processing function of ABAQUS to analyze the elastic andelastic-plastic dynamic time history for the computational model that takes thepile-soil interaction into consideration and that does not take th e pile-soilinteraction into consideration respectively. Finally, the thesis contrasts andanalyzes the effect of the model considering the interaction on the result of theresponse to earthquake for the structure from the aspects of floor displacement,story drift angle, floor shear force and concrete damage and puts forward therelated structural design suggestions.